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Consider the following statements in respect of aerated grit chamber: 1. The grit accumulates at the bottom in advancing spiral-flow aeration tanks location ally preceded by grit chambers, led to the eventual development of aerate grit chambers. 2. The excessive wear on grit handling equipment is a major factor for the popularity of aerated grit chambers. 3. Aerated grit chambers are designed to provide detention period of 1 minute at maximum rate of flow. 4. Diffusers are located at 0.45 m to 0.6 m above the bottom of the chamber. Which of the above statements are correct?
The chambers present in catalytic converters does not contain catalytic material, which promotes the oxidation of the emissions contained in the exhaust flow.
In a newly developed innovative idea brought up by CSIR in India, gas turbine exhaust gas are being utilized to convert feedwater into steam. Certain data of the experiment are as follows: mass flow rate of exhaust gas = 40 kg/hr, enthalpy of exhaust gas at the time of their exit from gas turbine is 600 kJ/kg, steam turbine output as measured by brake dynamometer = 60 hp-sec, thermal efficiency of steam power plant is 0.25, efficiency of exhaust gas in converting feedwater into steam is taken as 50%. Find the enthalpy of exhaust gas remaining after they generate steam from feedwater?
The number of chambers in an office is odd. Every chamber has fans and bulbs. The number of bulbs in each chamber is twice the number of fans in that chamber. The number of bulbs is the same in all the chambers. The total number of fans and bulbs in all the chambers is thirty. What is the total number of chambers in the office?
Catalytic converters are called three-way converters because they are used to reduce the concentration of CO. HC, and NOx in the exhaust.
Which of the following statements are correct for the A/D converters: a) The advantage of using a dual-slope A/D converter in a digital voltmeter is that its accuracy is high. b) The number of comparators in a 4-bit flash A/D converters is 15. c) The minimum number of comparators required to build an 8-bit flash A/D converter is 256. d) The number of comparators required in a 3-bit comparator type A/D converters is 8.
In a Plane there are 37 straight lines, of which 13 pass through the point A and 11 pass through the point B. Besides, no three lines pass through one point, no lines passes through both points A and B , and no two are parallel. Find the number of points of intersection of the straight lines.
A student M scored 25% marks and gets failed in an exam because of securing 15 marks less than the pass marks. Another student N passed the exam by scoring 45% marks, which are 25 marks more than the pass marks. Later, it was found that the actual pass marks are 40% more than the initially calculated pass marks. What is the average of both the pass marks?
Study the table carefully to answer the question that follows   Schools CLASSES VI VII VIII IX X   Pass Fail Pass Fail Pass Fail Pass Fail Pass Fail A 84 12 56 12 82 9 80 14 86 12 B 56 18 64 16 88 7 64 11 73 12 C 53 16 60 10 58 12 63 9 63 18 D 62 11 62 14 64 13 61 7 53 17 E 70 15 76 17 78 10 52 13 79 1 F 58 8 72 13 72 14 45 12 75 11 What is the average number of fail students from class IX from all the schools together?
Catalytic converter is usually a stainless steel container mounted along the exhaust pipe of the engine.